188 Mr. G. Lewis on 
haud interrupta ; elytris, striis 1-3 integris, suturali basi abbre- 
viata; propygidio pygidioque tenuissime punctulatis; meso- 
sterno late sinuato, marginato. 
L. 103 mill. 
Oblong-oval, rather convex, black, shining; the head 
smooth, stria complete, straight anteriorly, not deeply im- 
pressed ; the thorax ciliate on the outer edges, lateral strize 
complete and parallel to each other, inner stria continued 
behind the neck and feebly angulate behind eyes; the elytra, 
strie 1-3 and the inner subhumeral complete, 4 and 5 absent, 
sutural rather fine, not quite reaching the apex and shortened 
anteriorly by one third of the elytral length; the propygidium 
and pygidium are very finely punctulate and somewhat opaque, 
apical margin of the latter is smooth and without a margin ; 
the mesosternum is somewhat widely sinuous, stria rather 
fine and complete; the anterior tibiz have three robust teeth. 
This species belongs to Marseul’s first section; it is 
smaller, but in some respects similar to //. fortis, Sch. ‘The 
latter species is remarkable in having the thoracic stria inter- 
rupted behind the neck. 
Hab. Natal (Marshall). 
Hister rivalis, sp. n. 
Oblongo-ovatus, supra convexus, niger, nitidus ; fronte punctulata, 
stria integra antice recta; pronoto, striis lateralibus integris 
interstitiis latis, tenuissime punctulato ; elytris, striis 1-4 integris, 
latis, crenulatis, 5 in medio, suturali ante abbreviatis ; propygidio 
pygidioque grosse punctatis ; prosterno haud striato; mesosterno 
late sinuato, stria integra antice recta. 
L. 9 mill. 
‘The species is larger than, but in form similar to, HZ. longi- 
collis, Mars., and differs in having the interstices between the 
lateral thoracic striz more than as wide again, in being with- 
out the thoracic punctures and scratches, in the wider elytral 
striz, in the middle of the propygidium being longitudinally 
reebly raised, and in the anterior edge of the mesosternum being 
widely and distinctly sinuous. In other respects it agrees 
with H, longicollis, a common species at the Cape of Good 
Hope and Natal. 
Hab. Lukolela, Congo River (A. J. Clark). 
Hister Marshalli, sp. un. 
Breviter ovalis, convexus, niger, nitidus; fronte punctulata, stria 
carinata antice recta; pronoto lateralibus conspicue punctato, 
